25653235652 has 36 divisors (see below), whose sum is σ = 49452846828. Its totient is φ = 11635166400.

The previous prime is 25653235649. The next prime is 25653235691.

25653235652 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 18317998336 + 7335237316 = 135344^2 + 85646^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165638 + ... + 280610.

Almost surely, 2^25653235652 is an apocalyptic number.

25653235652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25653235652 is a deficient number, since it is larger than the sum of its proper divisors (23799611176).

25653235652 is a wasteful number, since it uses less digits than its factorization.

25653235652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115460 (or 115447 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 44.

Subtracting from 25653235652 its product of digits (1620000), we obtain a palindrome (25651615652).

The spelling of 25653235652 in words is "twenty-five billion, six hundred fifty-three million, two hundred thirty-five thousand, six hundred fifty-two".